Báo cáo hóa học: " Research Article Energy-Efﬁcient Bandwidt

Báo cáo hóa học: "Research Article Efﬁcient MAC Protocol for Subcarrier-Wise Rate Adaptation over WLAN" potx

... Communications and Networking Volume 2010, Article ID 264838, 9 pages doi:10.1155/2010/264838 Research Article Efﬁcient MAC Protocol for Subcarrier-Wise Rate Adaptation over WL A N Sung Won Kim, 1 Byung-Seo ... share this allocation information, frequent exchanges of the bit-loading information between them are required. This increases the overhead and, as a consequence, degrades...

Ngày tải lên : 21/06/2014, 17:20

9
274
0

Báo cáo hóa học: " Research Article Energy-Efﬁcient Bandwidth Allocation for Multiuser Scalable Video Streaming over WLAN" potx

... 219570, 14 pages doi:10.1155/2008/219570 Research Article Energy-Efﬁcient Bandwidth Allocation for Multiuser Scalable Video Streaming over WLAN Xin Ji, 1, 2, 3 Soﬁe Pollin, 1, 2, 3, 4 Gauthier ... recent video codecs, such as the Scalable Video Coding (SVC) extensions of H.264/AVC [3], MPEG-4 FGS [4], and so forth, enable embedded scalable coding. 3.3.1. Architec...

Ngày tải lên : 22/06/2014, 19:20

14
317
0

Báo cáo hóa học: "Research Article Intelligent Stale-Frame Discards for Real-Time Video Streaming over Wireless Ad Hoc Networks" ppt

... Communications and Networking Volume 2009, Article ID 486165, 10 pages doi:10.1155/2009/486165 Research Article Intelligent Stale-Frame Discards for Real-Time Video Streaming over Wireless Ad Hoc Networks Tsang-Ling ... for video receiver (PVFD R ): PVFD IN = Video frames discarded at IN B Total number of video frames transmitted , (10) PVFD R = Received but useless vid...

Ngày tải lên : 21/06/2014, 23:20

10
267
0

Báo cáo hóa học: "Research Article Efﬁcient Transmission Schemes for Multiuser MIMO Downlink with Linear Receivers and Partial Channel State Information" potx

... modiﬁed version of PU 2 RC for multiple antenna users, zero-forcing beamforming (ZF-BF) using channel vector quantization (CVQ) [18, 37, 38], spatial multiplex- ing with zero-forcing receiver processing, ... partial side information,” IEEE Transactions on Information Theory, vol. 51, no. 2, pp. 506–522, 2005. [35] M. Sharif and B. Hassibi, “A comparison of time-sharing, DPC, and beamforming...

Ngày tải lên : 21/06/2014, 17:20

12
384
0

Báo cáo hóa học: " Research Article Efﬁcient Uplink Modeling for Dynamic System-Level Simulations of Cellular and Mobile Networks" ppt

... quantitative notion of how much overloaded a cell is and how many users are unsatisfied in fact. So for the QoS case, we will define more appropriate performance metric in the following. 4.2. Overload and Unsatisfied ... exceed 1 thereby indicating the degree of overload. For instance, ρ c = 1.1 means a 10% overloaded cell, and ρ c = 2 means that the cell is double overloaded, that is, hal...

Ngày tải lên : 21/06/2014, 11:20

15
388
0

Báo cáo hóa học: " Research Article Efﬁcient MAC Protocols for Wireless Sensor Networks Endowed with Directive Antennas: A Cross-Layer Solution" pot

... this area still remains open for future research in WSNs. For instance, a forwarding ap- proach that exploits the use of directional antennas is pro- posed in [13] for WSNs. It tr ies maximizing ... Wireless Communications and Networking Volume 2007, Article ID 37910, 9 pages doi:10.1155/2007/37910 Research Article Efﬁcient MAC Protocols for Wireless Sensor Networks Endowed wi...

Ngày tải lên : 22/06/2014, 19:20

9
212
0

Báo cáo hóa học: " Research Article Carrier Frequency Offset Estimation for Multiuser MIMO OFDM Uplink Using CAZAC Sequences: Performance and Sequence Optimization" ppt

... Networking Volume 2011, Article ID 570680, 11 pages doi:10.1155/2011/570680 Research Ar ticle Carrier Frequency Offset Estimation for Multiuser MIMO OFDM Uplink Using CAZAC Sequences: Performance and S ... the same for the uniform power delay proﬁle and some exponential po wer delay proﬁles we tested. Hence, a common optimal Chu sequence can be used forbothchannelPDP’s.Thisisnotthec...

Ngày tải lên : 21/06/2014, 05:20

11
292
0

Báo cáo hóa học: " Research Article Subjective Quality Assessment of H.264/AVC Video Streaming with Packet Losses" potx

... Journal on Image and Video Processing Volume 2011, Article ID 190431, 12 pages doi:10.1155/2011/190431 Research Article Subjective Quality Assessment of H.264/AVC Video Streaming with Packet ... for each PLR, several error patterns. For each PLR and content, two decoded video sequences were manually selected in order to uniformly span a wide range of distortions, that is, pe...

Ngày tải lên : 21/06/2014, 07:20

12
351
0

Báo cáo hóa học: " Research Article A Dynamic Tap Allocation for Concurrent CMA-DD Equalizers" pot

... 10η CMA )fortheDDbranch. Therefore, since the larger B update generated by the DD branch is certainty-activated along time, it imposes a strong trend on the B components (taps) B k which reinforces ... Algorithm 2 procedure. For the SER and MSE computation at least 50 runs are performed, and the average is taken. Figures 3(a) and 3(b) show the operation with “Brazil A” proﬁle for f dopple...

Ngày tải lên : 21/06/2014, 08:20

6
297
0

Báo cáo hóa học: "Research Article Auction-Based Resource Allocation for Cooperative Video Transmission Protocols over Wireless Networks" ppt

... transmission with side information, we have obtained up to 4 dB gain over the amplify-and-forward or decode-and-forward protocols. For the multiuser case, we concentrate on the resource allocation method ... distortion via choosing bandwidth/ power allocation, conﬁguration of side information, subject to bandwidth and power constraints. For multiuser cases, most of current res...

Ngày tải lên : 21/06/2014, 20:20

12
306
0